
    public  class ChinaPeople extends People {
        public void speakHello() {
            System.out.println("您好");
        }

        public void averageHeight() {
            height = 168.78;
            System.out.println("中国人的平均身高:" + height + " 厘米");
        }

        //重写public void averageWeight()方法，输出:"中国人的平均体重:65公斤"
        public void averageWeight() {
            weight = 65;
            System.out.println("中国人的平均身高:" + height + " 公斤");
        }
    }

